hi everyone, I would need a approx. 5 or even better 7 meter cable for the hd-650.
where should I look for that?
Just get an extension cable, it's what I use.
That should give you about 6 meters if you use it with the stock HD650 cable.
Or grab this one to give you about 7.5 meters: http://www.yourcablestore.com/15-Foot-14-63mm-Stereo-Headphone-Extension-Cable_p_179.html